TPS92691QPWPTQ1 - English Editing Encyclopedia Entry

Product Overview

Category

The TPS92691QPWPTQ1 belongs to the category of integrated circuits (ICs) specifically designed for automotive lighting applications.

Use

This product is primarily used for controlling and driving high-power LEDs in automotive lighting systems. It provides efficient and reliable power management, ensuring optimal performance and longevity of the LEDs.

Characteristics

• High efficiency: The TPS92691QPWPTQ1 offers high power conversion efficiency, minimizing energy losses and maximizing the overall system efficiency.
• Robust design: This IC is built to withstand harsh automotive environments, including temperature variations, voltage fluctuations, and electromagnetic interference.
• Dimming capabilities: It supports various dimming techniques, allowing precise control over the brightness levels of the LEDs.
• Protection features: The TPS92691QPWPTQ1 incorporates multiple protection mechanisms, such as overvoltage protection, overcurrent protection, and thermal shutdown, ensuring the safety and reliability of the lighting system.

Package and Quantity

The TPS92691QPWPTQ1 is available in a small-sized, surface-mount package (PW-PowerPAD) with 20 pins. It is typically sold in reels or tubes, with a standard quantity of 250 units per reel/tube.

Specifications

• Input voltage range: 4.5V to 40V
• Output current capability: Up to 1.5A
• Switching frequency: Adjustable from 100kHz to 2MHz
• Operating temperature range: -40°C to +125°C
• Dimming control interface: PWM (Pulse Width Modulation)
• Fault detection and reporting: Integrated fault detection circuitry

Pin Configuration

The TPS92691QPWPTQ1 has a total of 20 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VIN: Input voltage
2. GND: Ground reference
3. EN: Enable pin for turning the IC on/off
4. DIM: Dimming control input
5. VCC: Supply voltage for internal circuitry
6. PGND: Power ground
7. SW: Switching node connection
8. LX: Inductor connection
9. FB: Feedback pin for regulating output voltage
10. COMP: Compensation pin for stability control
11. SS/TR: Soft-start and tracking pin
12. CS: Current sense pin
13. OVP: Overvoltage protection pin
14. AGND: Analog ground
15. VREF: Reference voltage output
16. PWM: PWM signal output
17. FAULT: Fault indication output
18. RT/CLK: External resistor or clock input
19. SYNC: Synchronization input
20. VOUT: Output voltage

Functional Features

• High-efficiency LED driver: The TPS92691QPWPTQ1 efficiently drives high-power LEDs, ensuring optimal luminosity with minimal power losses.
• Flexible dimming control: It supports PWM dimming, allowing precise adjustment of brightness levels according to specific requirements.
• Fault detection and reporting: The integrated fault detection circuitry provides real-time monitoring of various parameters, enabling timely fault identification and reporting.
• Protection mechanisms: The IC incorporates overvoltage protection, overcurrent protection, and thermal shutdown features, safeguarding the LEDs and the overall lighting system from potential damage.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and improved energy efficiency.
• Robust design ensures reliable operation in challenging automotive environments.
• Flexible dimming capabilities enable customization of lighting effects.
• Integrated protection mechanisms enhance the safety and longevity of the lighting system.

Disadvantages

• Limited output current capability may restrict usage in high-power LED applications.
• The small package size may pose challenges during assembly and soldering processes.

Working Principles

The TPS92691QPWPTQ1 operates as a buck converter, converting the input voltage to a regulated output voltage suitable for driving high-power LEDs. It utilizes a switching regulator topology, where an internal power switch controls the energy transfer from the input to the output. The IC employs pulse width modulation (PWM) techniques to regulate the output current and achieve dimming control. By adjusting the duty cycle of the PWM signal, the brightness of the LEDs can be precisely controlled.

Application Field Plans

The TPS92691QPWPTQ1 finds extensive application in various automotive lighting systems, including:

1. Headlights: It provides efficient and reliable LED driving for automotive headlights, ensuring optimal visibility and safety on the road.
2. Daytime Running Lights (DRL): The IC enables precise control over DRL brightness levels, enhancing vehicle visibility during daytime.
3. Tail Lights: It offers dimming capabilities for tail lights, allowing customization of lighting effects and improving aesthetics.
4. Interior